Hot-blast stove



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HAS l lllllllllllllll lx 2 Sheets-Sheet;v 2

G. E. STEUIDEL HOT BLAST STOVE Filed Sent. l5 a IIII .5

-' zuil Aug. 7, w3.

Patented thug., 7, if

am JE. STEUDFZL, F MILWAKEE, WISCONSIN.

Application illcdeptenaber 15, i921. @arial No. 500,934.

- and has particular reference to the checker worky withwhich the heating chamber of thesestoves is lined for the purpose of heating the air blast which is forced through these stoves before being yconducted to a la blast furnace. lrleretoore this checker work has been constructed of a plurality of separate parallel iiues formed by placingl courses of re brick in edge to edge vertica relation with each other, each course consistin of parallel extending rows of bricks l space apart. from each other'in one direction, with similar rows in the same horizon.

tal plane extendin across the chamber at right angles to the rstmentioned rows, each brick bein placed in -end to side horizontal relation with each other, each row extending in the same horizontal plane, the joints be ing'broken in the adjacent courses for uroses of-strength, and the necessary iil ing m done at the edges of the courses to completely fill up the space.

in the practice heretofore, it has been .thel

-custom to build u these courses one on 'top ot the other in t e same horizontal plane, which results at times in some of the upper courses shifting sidewise so that some of the flues become stopped or clogged up,`with the result that the hot blast stove is decreased in eiiciency and also materially lessened in capacity. v

By my improved method of laying these checker work courses towards the upper part of the checker work, ll place certain courses in vertical odset relation with each other so that the structure as a whole is bound together and there is much less danger of side slippin and thereb j stopping up the ilues.

Anot er and furt er object of my invention is the provision of a checker'work lining for hot blast stoves, which is simpleto put into position and which does not require removal and rebuilding such as was com mon in the old ractice.

riihese and ot er objects of my invention will be more fully and better understood by reference to the accompanying sheets of drawings, wherein- Figure l is a vertical sectional view ota hot blast stove embodying my invention;

Figure 2 ie aplan view of a section of 60 checker work in a hot blast stove; and

Figure 3 is a sectional View on line 3--3 of Fi 2.

Reerring now specifically to theldrawings, a' shell 10 is shown having a dome 11 65 thereon and having al gasI burner 12 in the lower end of said stove and an outlet 13 leading to the chimney through which the products of combustion escape. A cold air inlet 14 is provided and an outlet for the hot 70v blast 15 is also provided, leading from. the hot blast stove and from the combustion chamber 16 which extends vertically throughout the hot blast stove. A heating chamber 17 is provided having the checker 75 work 18 located therein through which ilues 19, 19 pass. The checker work in the lower portion of the, shell 10 is composed oit' courses oi tire brick 20, 20, each course consistin of rows-of brick 21, 21`extending in S0 one direction and other rows 22"extending in a direction at right angles to the rows 21,21, each brick being laid .in vertical edge to edge relation with the adjacent i brick. These courses extend at right an les to each S5 other in the heating chamber an each brick is placed in end to side relation with the ad jacent brick with the joints being broken so that ,vertical extendingr dues 19 are formed throughout the combustion chamber. Bea0 ginning about twelve or fourteen courses from the top of the checker work, as at 23, rows 21, made up of bricks one-half the height ot the usual bricks, are inserted so that the rows of bricks 22 and 23 instead of 95 bein in the same horizontal plane are in vertlcal oiiset relationwith each other, and this arrangement is continued until the top of the checker work is reached, whereu on bricks otone-half the height can be use in 10e the rows 22 to smooth u` the top of the checker work, or the checker work allowed to remain withv the edges'broken, such as illustrated in Fig. 3.

lit will thus be understood that by breaking the horizontal relation of the courses of brick in the upper part of the checker work anyI tendency to side-slip of the brick is the cold air is turned in through the inletI 14, passes into the chamber under the arches and there separates because of the restricted openingin the lower portion of the flue 17 and 'passes upward through the f iues where lheat from the checker work is absorbed,

' then downward through the combustion chamber 16 and out through the outlet 15.

It will also bev understood that the placing of the courses of brick in vertical ofiset relation with each other may be done in the lower 'part of the checker work, if desired, although I have found in practice that the weight of the checker' work is usually suilicient to hold the lower courses of brick in position without danger of .slip- Itg will also be understood that many hot blast stoves now in operationA which must be relined occasionally because of the slipping out of position of certain ofthe bricks, can have the top courses of the lining taken out and replaced with my improved stove lining and that these stoves will thus be made to render service without the necessity of tearing out the whole of the lining.

While I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form andthe proportion of parts and the substii I claim:

' l. In combination, a hot blast stove and a lining therefor comprising a checkerwork arranged in courses, a part of said courses being-'in' vertical offset relationv withV each other and each brick being in end to' side horizontal relation with each other.

2. In combination, a hot blast stove and a lining therefor comprising a checker work arranged in courses,'the said courses in the lower portion of the stove beingfarra'nged on the same horizontal plane and the courses in theupper portion of the said stove be ing arranged in vertical offset relation with each other,vthe bricks comprising the said courses being arranged in end to side horizontal relation with each other.

3. In combination a hot 4blast stove and a fire brick checker lining therefor com osed of horizontally extending courses of rick, each course composed of rows of brick spaced apart from each other and placed in end to side horizontal relation with each other and rows in the intermediate portion of said stove being arranged inthe same horizontal plane with a row of bricks onexhalf the height of the bricks making up one of the upper courses whereby alternate courses of bricks in the upper portion of the hot blast stove are arranged in vertical offset relation with each other, the bricks throughout the entire lining being placed in end to side horizontal relation with each other and in edge to edge vertical relation with each other. l

Signed at Milwaukee, Wisconsin, this9th ,day of September, 1921.

GEORGE E. STEUDEL. 

